<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>加加减减</title>
</head>

<body>
    <div id="app">
        <ul>
            <li v-for="(item,index) in nums">
                {{item}}
                <button @click="Del(index)">删除</button>
            </li>
        </ul>

        <button @click="nums.push(Math.floor(Math.random() * 20)) ">生成</button>
    </div>
</body>
<script src="./vue.js"></script>
<script>
    const app = new Vue({
        el: '#app',
        data: {
            nums: []
        },
        methods: {
            Del(id) {
                this.nums = this.nums.filter((item, index) => index != id)
            }
        }
    })
</script>

</html>